The new application of ceramic - electronic ceramics

In the 1980s, with the development of China's electronic industry and civilian needs, there was a rapid increase in the demand for ceramic capacitors and ceramic resonators in household appliances. Then Jingdezhen 999 plant in Jiangxi Province and Shanghai radio factory introduced Japan Murata piezoelectric ceramic frequency components production line. Thus began the mass production of piezoelectric ceramic products from the military goods to civilian goods.

By groping and digesting the introduced line of advanced materials and processes, many small and medium-sized piezoelectric ceramic manufacturers have been developing rapidly, such as Zhejiang Jiakang Electronics, Jiangsu, Jia Electronics Baotong Wuxi and Suzhou Chequers electronics. Capita Commercial electronic' flagship product is the ceramic capacitor, with the monthly production of ten million. Through digestion, absorption and improved as well as the introduction of advanced process lines, it soon became the largest domestic production and the most complete variety of high-frequency device manufacturers. The piezoelectric ceramic devices had reached 715 million in 2007. Jiangsu, Jia Electronics began producing small ceramic resonator and has now developed into the largest manufacturer of domestic ceramic resonator.

Recalling the development of the of piezoelectric ceramic industry in China, 20 years ago, only Shandong University, Tsinghua University, South China Institute of Technology, Tianjin University, Sichuan University, Shanghai and HKUST several universities focused on piezoelectric materials and professional. Shanghai Silicate Research the 7th Institute of China Electronics Technology Group and 26 of the Institute has a piezoelectric ceramic material and the Applied Research Laboratory, manufacturer Shandong Zibo radio ceramics factory, most of the major projects undertaken military products. The only mass-produced products involves civilian piezoelectric ceramic buzzers and igniters, small ceramic resonators, ceramic capacitors, piezoelectric ceramics for underwater acoustic and ultrasound transducers.

In order to adapt to the different requirements of the material properties of various piezoelectric devices, materials researchers extensively modified additives and have developed a large number of high-performance piezoelectric ceramic material.

In order to meet the manufacturing needs of the above 10MHz high frequency ceramic filters and ceramic resonators, materials researchers use the lead titanate ceramic material is replaced with a small amount of lanthanum oxide, and the amount of manganese, niobium, cerium ions, the high-frequency response is good, excellent temperature stability of modified lead titanate ceramic material, its electrical properties are quite similar materials with the same period of Murata, Japan. Also developed is suitable for high temperature ultrasound transducer lead titanate piezoelectric ceramic material. The technology has been successfully used for high-temperature environment in deep oil detection and flowmeter.

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Created on Dec 31st 1969 18:00. Viewed 0 times.

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